Twitter User "Guido Fawkes" Riles Law Enforcement

Twitter user Guido Fawkes (almost surely not his, or her, or their, real name) has become a representative of the legal limits of privacy on online social networks. Early this year, the Suffolk County District Attorney's office in Boston sent an administrative subpoena to Twitter, seeking sign-up information for Fawkes, who identifies himself in the Twitter account as a member of the hacker group Anonymous. Such subpoenas to social networks are